The Original 300ZX LS1 Conversion Manual

When Nissan developed the 1990 to 1996 300ZX (Z32), they produced a vehicle well ahead of its time in terms of technology and aerodynamics. Nissan's supercar had but one flaw...the overly complex, break down prone and expensive engine. Recognizing this issue, we looked to improve upon Nissan's work by adding more reliable power in the form of a domestic GM V8 drivetrain, the LS-series engines. Our project was featured in Sport Z Magazine as the first of its kind and to this day, generates conversation on the merits of the project.
Considered by some to be sacrilege by mating a domestic engine with an import, many more recognize how well the LS engines look in the Z and especially how much power emanates from the motor.
Being the very first to accomplish this project resulted in plenty of trial and error and it certainly wasn't pretty, however, the end result was plentiful in function.

We hope that this manual will help guide others through the process of their own project. There are now many more finished 300ZX LS1/2 projects and many more sources of information on how to complete the project in addition to this manual. Use this manual as a starting point, as a shopping list, as a source of ideas. Enjoy your project and, most importantly, take your time!

Table of Contents
Section I Pre-Project Information

Shopping List………………………………………..Page 3 Background………………………………………….Page 5
Initial Preparation……………………………………Page 6

Section IIStage I Installation

Accessories………………………………………….Page 7 Firewall……………………………………………...Page 7 Driveshaft……………………………………………Page 8
Test Fit I……………………………………………..Page 9

Section III Engine and Transmission Support

Engine Cross Member ………………………………Page 10
Steering Rack………………………………………..Page 11
Transmission Cross Member………………………..Page 11
Motor Mounts……………………………………….Page 13

Section IV Stage II Installation

Headers……………………………………………...Page 16
Test Fit II……………………………………………Page 16
Final Firewall Sheet Metal Work…………………...Page 17

Section V Final Motor Installation

Reinstallation………………………………………..Page 18
Hood and Clearance Issues………………………….Page 18
Throttle Cable……………………………………….Page 20 Fuel Pump…………………………………………...Page 20
Brake Lines………………………………………….Page 21
ECM Location ………………………………………Page 21

Section VI Electronics and Wiring

Initial Wiring………………………………………..Page 22
Under Hood to Under Dash Connections…………...Page 23
Gauge Cluster……………………………………….Page 24
VATS Bypass Box/Circuit………………………….Page 24
Battery Location…………………………………….Page 26
Power and Ground Routing…………………………Page 26
Fuel Pump Wiring…………………………………...Page 26
Ignition Switch………………………………………Page 27
Wiring Completion…………………………………..Page 27

Section VII Coolant System

Radiator and Cooling………………………………..Page 27
Heater Core………………………………………….Page 28

Section VIII Final Items

Intake………………………………………………..Page 29 Shifter……………………………………………….Page 30 Countdown………………………………………….Page 30

Section IX Appendix and Appreciation

Helpful Websites……………………………………Page 31 Appreciation………………………………………...Page 31